Bach: St John PassionThe Orchestra of the Age of Enlightenment and I Fagiolini, with tenor Mark Padmore as the Evangelist, give a performance of Bach's St John Passion following intensive investigations of interpretative issues aimed at emulating the impact that the work had when it was first heard at St Thomas's Church, Leipzig, in 1724. Snape Maltings, Suffolk (01728 687110), tonight; Queen Elizabeth Hall, London SE1 (0870 382 8000), Thurs.

Don CarlosIncreasingly acknowledged as one of Verdi's supreme masterpieces, this magnificent adaptation of Schiller's exploration of the tragic clash between political and personal imperatives is presented by Welsh National Opera in its five-act French text. John Caird's new production features an exceptionally strong cast, including Paul Charles Clarke in the title role and Nuccia Focile as Elisabeth de Valois. Carlo Rizzi conducts. Wales Millennium Centre, Cardiff Bay (0870 040 2000), Saturday.